Ringfeder Power Transmission USA Corporation GERWAH™ Magnetic Hysteresis Couplings HKD

GERWAH's permanent magnetic hysteresis coupling from the 'HKD' series consists of two separate unsupported halves. The coupling is connected with the shaft by means of clamping hubs. Thanks to its pioneering concept, HKD transmits torque smoothly in a 'sliding' manner which is completely wear-free. Thus downtimes due to maintenance or repair can be reduced to a minimum. High-tech torque transmission GERWAH Magnetic Clutches do not transmit torques through mechanical connections like their mechanical counterparts but by using magnetic forces. It has to be distinguished between synchronous- and hysteresis clutches according to the function principle in use. The hysteresis clutch With this type of clutch, one half of the clutch is coated with a hysteresis lining instead of permanent magnets. This hysteresis material works similar to the permanent magnets, but through the hysteresis lining, poles can be changed with low effort. If the nominal torque of the clutch is exceeded, the clutch starts slipping. Thereby the hysteresis material takes up energy from the drive system, due to the permanent changing of poles caused by the passing of the permanent magnets and transforms this into lost heat which is released into the environment. The synchronous clutch Synchronous clutches transmit torques by magnetic forces, which are produced through periodically arranged, opposite permanent magnets. According to the size of the clutch, torques up to 1000 Nm can be transmitted. When exceeding the rated torque level the magnetic forces break off, the clutch slips and transmits only a minor rest torque. The synchronous clutch owes its name to its characteristic to only transmit torque if a synchronous run of the system to connect is granted. Magnetic Clutches – Advantages at a glance Precise Torque Limiting Up to 1000 Nm (synchronous clutch) Easy and fast adjustable torque infinitely adaptable to your requirements Even for extreme high rotation speeds Independent of age and operation Superior hygiene requirements No abrasion No equipment or external supply units necessary Also available in stainless steel Unlimited number of overload cycles Absolutely wear-free Nominal torque always remains constant Maintenance-free Superior transmission with application of hysteresis clutches Constant and “soft“ slipping at torque limiting “Soft starts” – smooth starting moments The shafts to be connected can be operated with different torques Contact-free power transmission Applications Selected fields of application suitable for GERWAH Magnetic Clutches As safety coupling GERWAH Magnetic Clutches offer excellent protection against overload. Wear-free and precise they protect even sensitive applications and systems. In bottle capping systems Due to technical superiority and elegant functionality compared to all other solutions, hysteresis clutches established themselves world-wide in this field of application. Precise torque limiting, wearfree operation, constant and jerkfree behaviour within the overload range as well as the stainless steel and equipment free version are significant advantages. Especially our two series HSV and HLV have proven themselves as excellent for the use in bottling machines. In wind-up and unwind applications Within this field of application exact and constant torque limiting is crucial, which is fulfilled optimally by GERWAH Hysteresis Clutches. As brakes Especially for the application as a brake the GERWAH Magnetic Clutches show themselves as manifold suitable: As a load for engines for example, or even as generators for test blocks and furthermore in many other application fields. Through their abrasion-free operation, GERWAH Hysteresis Clutches offer fundamental advantages over friction based clutch systems. Within the progress technology Due to their ability to transmit torque even by going through magnetic non-conducting materials, GERWAH Magnetic Clutches offer unique possibilities for sealing, e.g. in pumps. Applications Bottle capping machines Wind-up and unwind systems Brakes Test procedures Packaging technology As safety clutch in e.g. extrusion plants, shredders, or similar Pump drives For “soft starts” As safety clutch with “smooth” overload transition behavior Food industry Cosmetic production Medical engineering Series HKD Flexible application Torque adjustable by rotor submergence This clutch consists of two halves and is not bearing-mounted! Range of applications As brake for “soft starts” As safety clutch with “smooth” overload transition behavior Magnetic hysteresis coupling HKD · Dimensions